yesterday I have decided to make first AMV on my new PC using AEE CS6. As the program does not support .mkv files I have spent all morning today trying to open my footage on Virtual Dub via Avisynth and finally became succesful. Yet when I try to save my .avi file it has no audio. Maybe I don't have some codecs or haven't checked some box or something..?

As for the vdub error, I have never encountered it... it should be basically saying there's missing audio somewhere along the line thus vdub can't do its magic, but I'll leave it to MisterHatt just to be sure.

As for the vdub error, I have never encountered it... it should be basically saying there's missing audio somewhere along the line thus vdub can't do its magic, but I'll leave it to MisterHatt just to be sure.

It does not work.. I get this messageI was using directshowsource script and I have found out one thing. It actually saves audio but does not play it for some reason.http://i50.tinypic.com/2jb8j2o.png (image couldn't fit)

This should be fine for your purposes. Extract .dll, .avsi, and .exe directly inside the plugins folder of avisynth, at that point you should be able to use the function that didn't work.

Either way, yes, dss loads audio by default, so clearly something else went wrong somehow, but I wouldn't really be able to know what exactly at this point...Have you tried the "File" > "Save wav" option from virtualdub? That might work out for your needs, although uncompressed audio can be pretty big (much less than uncompressed video, but still).